'I was so offended': Sophie Monk says a male celebrity asked her to do a sex tape 'worth $20 million'

Sophie Monk's been a singer, a model, a talent show judge, a Hollywood actress, a radio host, a Marilyn Monroe impersonator, and probably a few other things in between.

But the 36-year-old Aussie has never added "sex tape star" to that list – despite the dangling carrot of potentially millions of dollars. Sorry, dangling carrot might not be the best choice of metaphor here.

During a game of "Never Have I Ever" on KIIS FM's weeknight show with The Thinkergirls, Sophie revealed that a male celebrity asked her to do a sex tape. The unnamed star offered to split the profits, which he claimed would be around $20 million. Gee, that's optimistic!

"I was so offended," Sophie said. "The fact that they think I'd do it for the money…it's kind of prostitution-ish."

So who was this mystery guy? It doesn't seem like something one of her celebrity exes - Benji Madden or Sam Worthington -would ask her to do.

Perhaps it was Ray J, Kim Kardashian's sex tape partner? In 2012, Sophie and Ray frolicked in a Jacuzzi in an ad for shaving serum. Ahhh, we could spend all day playing this guessing game!

Sophie added that she turned down $10,000 to go on a date with a man who was trying to raise his celebrity profile in LA.

With a price tag like that, you'd hope the dessert was pretty special.